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The Cassini spacecraft was sent on its way to Saturn in 1997. Since then, she has travelled nearly four billion kilometers, delivered a probe to a toxic moon, discovered phantasmagorical structures on the planet's icy rings, studied the startling atmosphere on a tiny moon. Now, on a daring spiral orbit, Cassini will streak toward Saturn itself, streaming data to Earth before be...。李时珍从小对医学和本草就有着浓厚的兴趣，长大后因医术高超和楚王举荐而进入北京太医院。在波云诡谲的宫廷斗争中，他始终坚持医者救人的原则，从而得罪了严世蕃，甚至嘉靖皇帝；他还与制贩假药和迷信炼丹做了坚决的斗争。离开太医院之后，他以非凡的毅力和精神重修本草，编撰完成科学巨著《本草纲目》。。Winner of the Sakharov Prize 2014, Doctor Mukwege is internationally known as the man who mends thousands of women who have been raped during the 20 years of conflicts in the East of the Democratic Republic of the Congo, one of the poorest countries on the planet, despite its extremely rich sub-soil. His endless struggle to put an end to these atrocities and denounce the impuni...。